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Discussion Starter · #1 ·
Quick question for the batttery guru's -

I have a MagicShine and an older Night Rider 10w light. I have the batteries in a nice bag stored safely in my garage, which gets cold.

The batteries were fully charged, but after sitting a week or so, should I charge them again before a night ride?
 

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No for the magicshine Battery as its Lithium, will do well stored in the cold. You however would be better off leaving the battery depleted then charging it just before the ride to keep it at full capacity for longer.

Depends on what chemistry the Niterider Battery is, if Nimh, give it a quick charge, if lithium, as above, and if Nicd, you'll of lost very little so i would'nt bother.

When you get some spare time its worth reading some info off www.batteryuniversity.com
 

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Try not to keep either packs stored in the cold. Keep both batteries stored with a good 50 to 75 percent charge in them. The Niterider pack you will want to check and put more charge in them at least oncea month as they self discharge.
 

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BallisticBatteries said:
Try not to keep either packs stored in the cold....
Other people have said, here and elsewhere on-line, that storing a lithium ion battery in cooler temparatures is better. That seems to conflict with your statement above. Can anyone clarify this for me? Thanks!
 

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J_Hopper said:
Other people have said, here and elsewhere on-line, that storing a lithium ion battery in cooler temparatures is better. That seems to conflict with your statement above. Can anyone clarify this for me? Thanks!
Batteries store and release electricity via a chemical process. All chemical processes are slowed at cooler temperatures, thus your batteries will retain charge better in a cooler environment. The converse is true with regards to releasing their charge however. Since the chemical processes of the battery are less efficient at cooler temperatures, a warmer battery will release it's charge better.
 

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Discussion Starter · #8 ·
Yep, rode Monday night after having the batteries in the cold garage for two weeks (charged). No problems, light were bright the entire ride and held their charge perfectly.
 
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